diff options
| author | Michal Suchanek <msuchanek@suse.de> | 2022-02-25 21:51:34 +0100 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2022-03-04 20:55:33 +0100 |
| commit | 8b766b0f8eece55155146f7628610ce54a065e0f (patch) | |
| tree | 69e71079edf81bf83a13d5669545bc16de30f07b /arch | |
| parent | a4a072d98d8c2370476de3b5f0c94f2cf2fd35bf (diff) | |
sysfb: Enable boot time VESA graphic mode selection
Since switch to simplefb/simpledrm VESA graphic mode selection with vga=
kernel parameter is no longer available with legacy BIOS.
The x86 realmode boot code enables the VESA graphic modes when option
FB_BOOT_VESA_SUPPORT is enabled.
This option is selected by vesafb but not simplefb/simpledrm.
To enable use of VESA modes with simplefb in legacy BIOS boot mode drop
dependency of BOOT_VESA_SUPPORT on FB, also drop the FB_ prefix. Select
the option from sysfb rather than the drivers that depend on it.
The BOOT_VESA_SUPPORT is not specific to framebuffer but rather to x86
platform, move it from fbdev to x86 Kconfig.
Fixes: e3263ab389a7 ("x86: provide platform-devices for boot-framebuffers")
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/948c39940a4e99f5b43bdbcbe537faae71a43e1d.1645822213.git.msuchanek@suse.de
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/Kconfig | 6 | ||||
| -rw-r--r-- | arch/x86/boot/video-vesa.c | 4 |
2 files changed, 8 insertions, 2 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 9f5bd41bf660..cceb1aab0486 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -942,6 +942,12 @@ config GART_IOMMU If unsure, say Y. +config BOOT_VESA_SUPPORT + bool + help + If true, at least one selected framebuffer driver can take advantage + of VESA video modes set at an early boot stage via the vga= parameter. + config MAXSMP bool "Enable Maximum number of SMP Processors and NUMA Nodes" depends on X86_64 && SMP && DEBUG_KERNEL diff --git a/arch/x86/boot/video-vesa.c b/arch/x86/boot/video-vesa.c index 7e185977a984..c2c6d35e3a43 100644 --- a/arch/x86/boot/video-vesa.c +++ b/arch/x86/boot/video-vesa.c @@ -83,7 +83,7 @@ static int vesa_probe(void) (vminfo.memory_layout == 4 || vminfo.memory_layout == 6) && vminfo.memory_planes == 1) { -#ifdef CONFIG_FB_BOOT_VESA_SUPPORT +#ifdef CONFIG_BOOT_VESA_SUPPORT /* Graphics mode, color, linear frame buffer supported. Only register the mode if if framebuffer is configured, however, @@ -121,7 +121,7 @@ static int vesa_set_mode(struct mode_info *mode) if ((vminfo.mode_attr & 0x15) == 0x05) { /* It's a supported text mode */ is_graphic = 0; -#ifdef CONFIG_FB_BOOT_VESA_SUPPORT +#ifdef CONFIG_BOOT_VESA_SUPPORT } else if ((vminfo.mode_attr & 0x99) == 0x99) { /* It's a graphics mode with linear frame buffer */ is_graphic = 1; |